ACQUISITION (Details) $ / shares in Units, $ in Thousands			12 Months Ended
	Apr. 30, 2015 $ / shares shares	Jan. 24, 2014 Branch	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2014 USD ($) $ / shares	Dec. 31, 2013 USD ($) $ / shares
BNB Bancorp
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Share price (usd per share) | $ / shares	$ 15.75
Exhange ratio per share | shares	2.005
Core deposit intangible amortization period (in years)	9 years
Estimated amount of acquiree's total revenue and net income included in acquirer's income statement [Abstract]
Total revenue | $			$ 1,111
Net income | $			212
Unaudited pro forma information [Abstract]
Total revenue | $			50,213	$ 47,595	$ 50,089
Net income | $			$ 11,883	$ 10,508	$ 11,505
Basic earnings per common share (in dollars per share) | $ / shares			$ 1.20	$ 1.07	$ 1.16
Diluted earnings per common share (in dollars per share) | $ / shares			$ 1.19	$ 1.05	$ 1.14
Eaton National Bank
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches		5
Core deposit intangible amortization period (in years)		8 years
Eaton, Ohio
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches		2
West Alexandria, Ohio
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches		1
New Paris, Ohio
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches		1
Lewisburg, Ohio
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches		1